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Security of Wireless Ad Hoc Networks

HajSalehi Sichani, Mohsen | 2009

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 39995 (52)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Movaghar, Ali
  7. Abstract:
  8. Nowadays wireless technology is widespread all over the world and there is a competition among companies to provide the most secure and high range wireless networks for their customers. This thesis focuses on the security of wireless ad hoc networks. There are lots of different encryption algorithms for securing wireless ad hoc networks. Some of the most important are: WEP, TKIP, WPA, WPA2. All other encryption methods of wireless ad hoc networks are derived from these methods. This thesis focuses on WEP and WPA2. For both algorithms, a literature review is conducted, a new approach to cracking is suggested, and tested on real data, and the future works are mentioned. For WEP, which is an acronym of Wired Equivalent Privacy, a new approach is used that proves that WEP is not a secure algorithm and shows that this algorithm is not a shuffle algorithm although these vulnerabilities have been proven in different ways through years. For WPA2, which is an acronym of Wi-Fi Protected Access, its main encryption algorithm which is AES and is an acronym of Advanced Encryption Standard is discussed and a new approach is used which in real situation can break each bit of AES with the success rate of more than 70 percent. It should be mentioned that so far AES is not officially broken and is known as the most secure encryption algorithm of ad hoc networks by National Institute of Standards and Technology of America (NIST).
  9. Keywords:
  10. Data Mining ; Advanced Encryption Standard (AES) ; Wireless Ad-hoc Network ; Cryptography ; Wireless Fidelity (Wi-Fi) ; Network Security ; Wireless Fidelity Protected Access

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